Feed-rolls for paper-feeding machines.



No 656,593; Patentd Aug. 2|, I900.

H. BILGRAM. v

FEED ROLLS FOR PAPER-FEEDING MACHINES.

' (Application filed Dad. 22, 1899.)

2 Sheets-Sheet I.

(No Model.)

No. 656,593. Patented Aug. 2|, I900. n. BILGBAM.

FEED BULLS FOR PA'PERFEEDING MACHINES.

(Application filed Doc. 22, 1899.)

(No Mpdel.) 2 Sheets-Sheet 2.

naled in suitable bearings 0.

:NITED STATES K PATENT OFFICE.

IIUGOBILGRAM, or PHILADELPHIA, PENNSYLVANIA i FEED-ROLLS 'FORPAPER-FEEDING MACHINES.

SPECIFICATION forming part of Lettens Patent No. 656,593, dated August21, 1900.

Application filed December 22; 18979.. Serial No. 741, 216. (Nomodel-lcity and county of Philadelphia and State of Pennsylvania, have inventedan Improvement in Feeding-Rolls for Paper-Feeding Machines, &c., ofwhich the following is a speci flcation.

My invention relates to feed-rolls for paperfeeding machines, &c.; andit consists of the improvements which are fully setforth in thefollowing specification and are shown in the accompanying drawings.

In feed-rolls for feeding paper, &c., it is desirable that one or bothof the rolls shall have freedom to yield or automatically adjust itselfto suit variation in the thickness of the paper or material being fed orinequalities therein. This has usually been effected by mounting theroll-shaft in adjustable or yieldingbearings. With such a constructionany move ment in the rolls is accompanied by a corre sponding movementof the roll-shaft and parts carried by it. Such a movement is oftenobjectionable, as aflecting the driving connections and for otherreasons.

It is the object of my invention to enable. the roll to yield orautomatically adjust itself provision for slight transverse movementwith reference thereto and employ a yielding fric tional connectionbetween the roll and shaft, which permits the roll to yield or movetransversely 011 its shaft whenever the force applied to it in a radialdirection exceeds the frictional pressure of such connection.

In the accompanying drawings, Figure 1 is an elevation of paper-feedrolls embodying myinvention, with the upper feed-roll in section. Fig. 2is a transverse vertical sectional view in the line at w of Fig. 1. Fig.3 is a View similar to Fig. 1, illustrating a modification. Fig. 4: is aperspective view of detached parts of the upper feed-rolls of 'Fig. 3,and Fig. 5 is a plan view of the intermediate washer shown in Fig. 4.

A B are feed-rolls, of which one, as A, may be carried fast upon itsshaft a, which is jou r- The other feedroll B is carried on its shaft bby a frictional or yielding connection, with provision for transversemovement with respect to the shaft. For this purpose the feed-rollhas aninternal bore larger than the diametcrof the shaft, so as to fit looselythereon with free dom of slight transverse movement and is held on theshaft through a suitable yielding connection.

Referring first to the construction shown in Figs. 1 and 2, the roll Bis held between the fast disk (land the loose disk D on the shaft 19,with a spring E bearing on the disk D and thrusting it upon the end ofthefroll. By these means the roll'isj held in driving connection withthe shaft 1), but may move lat erally between the disks 0 and D to aslight extent permitted by the difiereuce between the diameters of thebore of the roll and the shaft. The roll 13 being thenin an eccentricposition in its shaft 1) the rotation will have a tendency to pass theroll against the roll A, and thus grip the paper to be fed.

As it is objectionable in some cases if the roller is free to rotateupon its shaft, I have devised a construction to prevent this whilepermitting the transverse movement. He ferring to this construction,(shown in Figs. 3, 4, and 5,) F G are disks fast upon a shaft 79, and His a spring between oneof the disks, as F, and the roll, acting tothrust the roll forward toward the opposite disk G. I is a washerinterposed between the disk G and the end of the roll B, whichisprovided with lugs i and j, respectively engaging radial notches g and cin the disk Gand roll B. These lugs t' and j and the correspondingnotches are arranged at substantially right angles to one another, thuspermitting the roll B to move transversely upon its shaft 1) in anydirection without being subjected to any rotary slip with relation tosaid shaft b. Obviously the arrangement of either or both lugs andnotches g 0 may be reversed, the lugs being arranged on the diskand theroll and the notches on the washer.

The details of construction shown may be varied without departing fromthe invention.

erence thereto, and a yielding frictional connection between the endfaces of said roll and its shaft, whereby the roll may move or yieldtransversely with respect to its shaft and said frictional action.

2. In feeding-rolls for papenfeeding ma chines, &c.,the combination witha roll-shaft, of a roll having an internal bore of a greater diameterthan the diameter of the roll-shaft and a yielding connection betweenthe end faces of said roll and the roll-shaft.

3. In feeding-rolls for paper-feeding mafor transversemovement withreference thereto, and a yielding disk held in frictional 7 contact withan end face of said roll and forming a yielding frictional connectionbetween the roll and shaft with provision for transverse movement of theroll with respect to its shaft. V

5. In feeding-rolls for paper-feeding machines, &c., the combination ofa roll-shaft, clamping-disks carried by said shaft, a roll fittingloosely on said shaft between said clamping-disks with provision fortransverse movement with respect to its shaft between said disks, andmeans to hold said disks in yielding frictional contact with the endfaces of said roll.

In testimony of which invention I hereunto set my hand.

HUGO BILGRAM. \Vitnesses:

ISAAC THOMPSON, J. RoLLIN PARKER.

